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Time-resolved photoelectron spectroscopy of Al3O3− : Photoisomerization versus photofragmentation

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2010

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Koyasu, Kiichirou

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http://nbn-resolving.de/urn:nbn:de:bsz:352-191830
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https://doi.org/10.1007/s00339-010-6160-8
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Applied Physics A. 2010, 102(3), pp. 615-620. ISSN 0947-8396. Available under: doi: 10.1007/s00339-010-6160-8

Zusammenfassung

In general, clusters are unstable and in many cases several metastable isomers exist even at low temperature. Therefore, a cluster may react with a dramatic geometry change to a small disturbance such as a weak field or to the absorption of a low-energy photon. Here, we study the response of Al3O3− to photoexcitation using time-resolved photoelectron spectroscopy. Earlier experimental and theoretical studies suggested that this cluster anion undergoes a geometry change after photoexcitation. In contrast, our time-resolved spectra indicate that photoexcitation triggers ultra-fast fragmentation. This example demonstrates that ultra-fast processes in clusters are not well understood and that it is still difficult to gain reliable experimental data about such processes.

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ISO 690KOYASU, Kiichirou, Christian BRAUN, Sebastian PROCH, Gerd GANTEFÖR, 2010. Time-resolved photoelectron spectroscopy of Al3O3− : Photoisomerization versus photofragmentation. In: Applied Physics A. 2010, 102(3), pp. 615-620. ISSN 0947-8396. Available under: doi: 10.1007/s00339-010-6160-8
BibTex
@article{Koyasu2010Timer-19183,
  year={2010},
  doi={10.1007/s00339-010-6160-8},
  title={Time-resolved photoelectron spectroscopy of Al<sub>3</sub>O<sub>3</sub><sup>−</sup> : Photoisomerization versus photofragmentation},
  number={3},
  volume={102},
  issn={0947-8396},
  journal={Applied Physics A},
  pages={615--620},
  author={Koyasu, Kiichirou and Braun, Christian and Proch, Sebastian and Ganteför, Gerd}
}
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